Examples of javax.swing.event.TreeModelEvent

javax.swing.event.TreeModelEvent
oracle.com/javase/tutorial/uiswing/events/treemodellistener.html">How to Write a Tree Model Listener, a section in The Java Tutorial.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see {@link java.beans.XMLEncoder}. @author Rob Davis @author Ray Ryan @author Scott Violet

     */
    protected void fireTreeNodesRemoved(Object source, Object[] path,
            int[] childIndices, Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path, childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeNodesRemoved(e);
            }
        }
    }

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     */
    protected void fireTreeStructureChanged(Object source, Object[] path,
            int[] childIndices, Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path, childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeStructureChanged(e);
            }
        }
    }

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          CatalogPieceOfFurniture piece = ev.getItem();
          switch (ev.getType()) {
            case ADD :
              if (piece.getCategory().getFurnitureCount() == 1) {
                // Fire nodes inserted for new category
                catalogTreeModel.fireTreeNodesInserted(new TreeModelEvent(catalogTreeModel,
                    new Object [] {catalog}, 
                    new int [] {Collections.binarySearch(catalog.getCategories(), piece.getCategory())}, 
                    new Object [] {piece.getCategory()}));
              } else {
                // Fire nodes inserted for new piece
                catalogTreeModel.fireTreeNodesInserted(new TreeModelEvent(catalogTreeModel,
                    new Object [] {catalog, piece.getCategory()},
                    new int [] {ev.getIndex()},
                    new Object [] {piece}));
              }
              break;
            case DELETE :
              if (piece.getCategory().getFurnitureCount() == 0) {
                // Fire nodes removed for deleted category
                catalogTreeModel.fireTreeNodesRemoved(new TreeModelEvent(catalogTreeModel,
                    new Object [] {catalog},
                    new int [] {-(Collections.binarySearch(catalog.getCategories(), piece.getCategory()) + 1)},
                    new Object [] {piece.getCategory()}));
              } else {
                // Fire nodes removed for deleted piece
                catalogTreeModel.fireTreeNodesRemoved(new TreeModelEvent(catalogTreeModel, 
                    new Object [] {catalog, piece.getCategory()},
                    new int [] {ev.getIndex()},
                    new Object [] {piece}));
              }
              break;

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    protected void fireTreeNodesChanged(Object source, Object[] path,
                                        int[] childIndices,
                                        Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path,
                                           childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeNodesChanged(e);
            }
        }
    }

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    protected void fireTreeNodesInserted(Object source, Object[] path,
                                         int[] childIndices,
                                         Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path,
                                           childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeNodesInserted(e);
            }
        }
    }

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    protected void fireTreeNodesRemoved(Object source, Object[] path,
                                        int[] childIndices,
                                        Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path,
                                           childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeNodesRemoved(e);
            }
        }
    }

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    protected void fireTreeStructureChanged(Object source, Object[] path,
                                            int[] childIndices,
                                            Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == TreeModelListener.class) {
                // Lazily create the event:
                if (e == null)
                    e = new TreeModelEvent(source, path,
                                           childIndices, children);
                ((TreeModelListener) listeners[i + 1]).treeStructureChanged(e);
            }
        }
    }

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    /** {@inheritDoc} */
    public void listChanged(ListEvent<E> listChanges) {
        // todo: fire a more general event
        for(Iterator<TreeModelListener> i = listenerList.iterator(); i.hasNext(); ) {
            TreeModelListener listener = i.next();
            listener.treeStructureChanged(new TreeModelEvent(this, new Object[] { treeRoot }));
        }
    }

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        }
        while (true);
    }


    public static void notifyTreeModelListeners(Object source, Set<TreeModelListener> treeModelListeners, TreePath path, TreeEventType eventType) {
        TreeModelEvent event = new TreeModelEvent(source, path);
        notifyTreeModelListeners(treeModelListeners, eventType, event);
    }

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  private void notifyTreeStructureChanged()
  {
    TreeModelListener l;
    Object[] path = {this.root};
    TreeModelEvent e = new TreeModelEvent(this,path);
    Iterator it = listeners.iterator();
    while(it.hasNext())
    {
      l = (TreeModelListener)it.next();
      l.treeStructureChanged(e);

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